GK 12 fireplace insert

The GK12 is a classic firebox made of steel and cast iron, cast entirely in Gerkand. It has a nominal power of 12 kW, a side opening door and high-quality heat-resistant glass. Simple and elegant design fits into any interior.
Quality Gerkand!

Technical information

Nominal power in kW12
Maximum power in kW15
Overall dimensions (mm)695 x 400 x 720
Weight (kg)90
Efficiency (%)65,83
Hearth Dimension (L x P x H) mm630 x 300 x 250
Glass dimension ( L/H ) mm595 х 370 х 4
Smoke exit positionUp
Chimney (mm)180
Maximum log size (mm)580
Finishing materials / thickness (mm)Steel, 4mm and cast iron
Type of cast ironGray Cast iron
Thickness of cast iron (mm)From 5 to 12 mm
Gasket sealing materialsISO GLASS
Glass resistance and typeCeramic 750°C
Surface coatingHeat resistance to 600°C
Type of doorcast iron
Type of handlecast iron
Emissions of CO (%)0.3136
Exhaust temperature385°C
Mass flow of smoke (g/s)19,15
Dust concentration discarded in 13% СО2>49,15 mg/m³
Wood consumption (kg/h)3,6
Minimum distance to adjacent materials: rear / side / front / down (mm)200 / 200 / 1200 /400
Depression chimney required12 Pa
StandardEN 13229

Product Benefits

  • heat resistant glass
  • Easy to use
  • maximum power of 15 kW
  • side opening of the door


  • 3 years warranty
  • Hand welded seams and assemblies
  • Cast iron foundry into the Gerkand factory
  • Business and individual high value service

Product variations

GK 12 firebox is also available in the following version:

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